Diaphragm for sound reproduction



June 1 6, 1931. A. VON SUCHORZYNSKI I DIAPHRAGM FOR SOUND REPRODUCTION File d March 31, 1927 EMZ. 11.2.

flaw-W Patented June 16, 1931 UNITED STA res PATENT OFFICE ANTON m SUCHORZYNSKI, or nansLau-nrscnorswatnn, GERMANY nmrnmem' 1m sounn REPRODUCTION Application filed March 31, 1927, Serial No.

View seen from the right sideof Fig. 1.-

Thediaphragm has-circular ribs and radial ribs 21. According to the invention thecircular ribs 20 are eccentrically arranged to the centre of the diaphragm so lo that the several oscillation surfaces formed by the radial-ribs are of difierent sizes. The rim 23 of the diaphragm is concave andthe central portion of the same is convex, the concave portion 23 of the diaphragm 26 having a shorter radius than the concave portion 24 of the same so :that the several oscillation-surfaces or sections; formed by the intersecting ribs, are not only of difi'erent sizes but also of difl'erent curvatures. 80 The diaphragm is of a' shape similar to that of the tympan of the human ear and, owing to this sha e, the natural tone of the diaphragm is amped almost completely so that the diaphragm cannot oscillate undul even when oscillations are induced vvhic are close to the natural oscillations of the diaphrag .n.

I claim l A cup-shaped diaphragm for sound re- 40 ceiving or sound reproducing device, comprising in combination a cup shaped diaphra m, intersecting circular and radial ribs on t e cup-shaped surface of 'said diaphragm subdividing said surface into small 46 sections the vertex of the'cup-shaped diare 1 shows a vertical cross section 179,997, and in Germany August 2a. 1926.

phragm being eccentric to the diaphragm edge, said intersecting circular and radial ribs subdividing the whole diaphragm-surface into convex and concave shaped segments of di-fl'erent sizes.

In testimony whereof I aflix my signature.

ANTON VON SUCHORZYNSKI. 

